Cylinder and concave for threshing machines



May 17, 1932. F. J. HABA CYLINDER AND CONCAVE FOR THRESHING MACHINES Filed Aug. 22, 1929 ZSheets-Sheet 1 May 17, 1932. F. J. HABA 1,859,138

CYLINDER AND CONCAVE FOR THRESHING MACHINES Filed Aug. 22, 1929 2 Sheets-Sheet 2 ATTORNEY Patented May 17, 1932 UNITED STATES;

PATENT FRANK J. HABA, OF CALDWELL, KANSAS CYLINDER Am) CON'CAVE FORTHRESHING MACHINES Application filed August 22, 1929. Serial No. 387,617.

l A still further and important object resides wise adjusted.

in the mount for the concave which will permit of the same moving away from the cylinder should an obstruction be found in the straw, which automatically returns the concave to a position where the same will not fall on the cylinder after such obstruction has passed the concave or ejected from the machine and which is adjustable toregulate the .position of the teeth of the concave with respect to those of the cylinder.

A further object is the provision of means whereby, when the concave is adjusted with respect to the cylinder, the distance between the teeth of theconc'ave and cylinder is like-- The invention will be fully and comprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawings which form part of the application, with the understanding. however, that the improvement is capable of extended applica-"j tion and is not confined. to the exact showing 7 of the drawings nor to the precise construction described and, therefore such changes and modifications may be made therefrom as do not affect the spirit of the invention .nor exceed the scope thereof as expressed in the appended claims.

In the drawings:

Figure 1 is a side elevation of a suflicient portion of the box or body of a thresher to illustrate the application of my improvement thereon.

Figure 2 is an approximately central longitudinal sectional view'therethrough.

Figure 3 is a sectional view substantially similar to Figure 2, but illustrating the manner in which the concave moves away from i the cylinder when an obstacle is contacted by front or forward end of the concave to illustrate the shaft thereon.

Figure 5 is a similar view through the rear of the concave.

Figure 6 is a detail elevation to illustrate the manner in which the rear shaft of the concave is removably latched thereto;

In the drawings the numeral 1 designates a sufficient portion of the body of a threshing machine to illustrate the application of my improvement thereon. The body 1 has its sides provided with the usual alining semicylindrical openings on whose lower and flat faces there are fixed the bearings 2 for the shaft 3 of the cylinder.

The top of the body is open, and the sides thereof have their upper edges above the feeder end 4 formed with upstanding portions 5'=and with rounded depressions 6 that are continued from the outer walls of the said upstanding portions, the wall 6 being upwardly extended to provide the sides of the body 1 with cam-shaped tracks 7, whose purpose will presently be described.

"The body'of the cylinder 8 comprises end wheels 9"and a central Wheel 10 through all of which the shaft .3 extends and to which the said shaft is fixed. However, if desired,

the shaft may be in the nature of trunnions and extend onlyfrom the end wheels 9 The end wheels 9 are peripherally formed with equidistantly spaced angularly arranged notches ll, the said notches being arranged between the spokes of'the wheels, and the inner faces of the wheels 9, in a line with the notches 11. are formed with inwardly directed elements in the nature of ledges 12. The center wheel 10 is also formed with equidistantly spaced series of peripheral notches, but these notches are arranged out of the plane of the notches 11 and are consequently arranged angularly with respect to the notches 11. V

The concave, which is arranged above the cylinder, in counter distinction to the usual construction of devices of this character, is indicated by the numeral 19, and this concave carries series of teeth 20 which are of a similar construction as the teeth previously described and which are connected thereto in the same manner as the teeth 16 are secured to the cylinder. The active faces orbodies concave a'when :desired.

f th teeth 20 incline rearwardly from the forward end of the concave 19.

The forward end of the concave 19 has fixedly secured to the top face thereof upstanding brackets 21, between which there is passed and fixed a shaft 22. The shaft is arranged directlyoventhe rounded .deprcsizTh r leveri24 passesthrongh aibraeket25rthe said bracket having anzarcnate:slot'126aand :the .:lever has a :threaded cor [stud 28 :which p asses ithronghtthea slmt. iTheastudcor pin-2 8:is engageidcbyiatwvingz-nutr29. rByzthis iarrangement :it will the noted atlratztihe :ad-

z.) rjrustment of :thenlever 24:permitsrofctherr.ais-

: ing: or' loweringeof thezfnontaen d: offrtherconocaveili).

On the top and atstheirearuofithe. concave 19ethere is: a tnansversekvsarrangeds shaft 30.

: :ao -iThisshaftaisheldon;the:concave.byibearings which include allower ssection-filiaa'nd r-sectioni has -:both ofiits zenirls 'tbifzureated and 1is swingabletoveraonerofitherronnflediendszof "the fixedssections sand .therejsi designed i'tO .be passed through'tboth*oftthese vendsra (T8- movable pivot :ipin. dnrthisrmanne'r it 'Mill ibe noted tthat therconcave mayZ-be removed from" the thresher andrreplaoed hymno'ther f'lhezshaft 30"laas itseerfdszcranked as at:33, and :the coutwardly :exten-ding portions of these cranked endssare neoe'medzincecoenbricallyearrangdibearingiopeningsiMiin' wheels 33 on rollers 35: thatearermoamtedfimturning in :be.arings6:on?.the;top rand attthersidssixifcthe body 1. Therollers r35 care 'zperiipherally grooved :and ;are: preferably formed each! of :two 1 meeting sections. :The bearingrporti-on 7 10f: the crankedsends ofatheishzaftidflnialezbent,

7 ton otherwiseifonned with :arms 37-1whichrexitendrdcwnwardly :llorrgZ-the sides-(cf therbody ;1. :Each ofet'he ZiLIIHS :371 iszcontactedby the .-straight:,a:nd what I' willrterm ."nea-r r dg 0f 39, to the side of the body 1. The uppenend ofveaeh dog is: extended: at .anselevated aangle .as' indicated :byrthe :numerah40, the. corners H at: t-heirsjnncture ofctheeangle redgescr walls and'the rbody offthe :dqg's:bei-ng notched, as zit-:41. EEach,dogslightlyrbelowzitssactivefend, or the gportion "thereof :provided -w-ith the notch i 41rhas rpivotallv securdxtheretoea"rod V =42; gzEachrodzpasseszthronghrtheee vezend 43 rofaa lever- .4 4 which isipivoteilztoethemespective' sides of the body 1, and each lever is guided through a bracket 45. Each bracket 45 has an arcuate slot 46 and each lever has an outwardly extending threaded stem 47 that is received through the slot 46. Each threaded stem is engaged by a winged nut 48. xfiyiadjnstin g. the pivoted-levers 44. the ten- .U'sion dfasprings-Awwhich iare zarran-ged be tween the eye ends 43 of the levers and the dogs 38 will be regulated and consequently moreor less**pressure will be exerted by the ,sprirnginfluenceddogs against the arms 37, with the result thatthe eccentrically mounted shaft. 30\W11ich,isconnected to the concave 19 will be moved vertically, with the result that 30 :theteethon-the concave will.beradjnstedlwith *rrespectto' the teeth on the cylinder.

I :Shouldam obstruction bewinixed withrthe stra-vvithat -is threshedehetween the Qteeth 16 ands-20,: suchobstnuction will'; contact, ,or' be 1 brought into contact with the teeth'QO sat. the fronteend-of \the concave. This will cause the. concave .to be movedbodily .inra rear- Yward'a directionflasdisclosed byzFigureB .of .theednawings, causin-gfztha ends: ofthe shaft; 122 i to ebeshrought bouts of the notches zin-.the

1 members 23, iand permitting. therendsaofr the s'shaft .22.,trave1aupwardly ;on.fthe.-cam-.tracks 7 Wh-iiCh Wi1l.a1so.caiuse thereanoftheconcave to be moved upwardly as thesame will exert ra tpressuret up ontthecrank shaft to cause "the eeecentrieally ,mounted wheels --.or rollers -to (more; thersaidz shaftlin. anupwardi direction. This willncausethearms'. .37 totnaVelupwa-rdly over the surfaces '40 and tonbenreceivedin 109 the notches .41 so; thattheconcavewill be held a.determineddistancelabovethe:cylinder, :but .wilLaisoQbe: sustained inlaposition so that .the same .may be manually returned to ,its

:initial: position. :Thus.itwillbe-seenjthataif obstacle'lbetween, the teeth ofthe. concave and vthe, cylinder can inflict no ury .to either of these. elements.

@It .is believed the foregoing description, .when read in connection with 'the acconi panying drawingswill CIearlyCset forth my cconstruction ,and the vadnantages {thereof to :thosefskilledinthe. art; to which the invention relates and that further detailed description will not be required. c 1

,-Having described the invention ,I' claim 11. 'A concave structure ifor an 'overshot threshing .cylinder comprising ;a 'concaved body spaced above the "cylinder, "a crank shaft journaled above the cylinder and pivot ally supporting the 1 rear edge of said'body and capable ofrai'sin g the rearof thebody, 'meansfor supporting "the forward portion of the "body and 'capable Ofpermitting the 1 body 1 to movewearwardlyi an'diiupwardly, a spring pressed "dog :engageable with --said shaft for holding'themear'o'f thebodyatran -elevatedposition and manually operable :means for setting the dog-and radjustin-g'the tension of the spring.

2. A concave structure for an overshot threshing cylind'er comprising a concaved body spaced above the cylinder, a crank shaft freely journaled for rotation above the cylinder and pivotally supporting the rear edge of the body and capable of raising the rear of the body, means resiliently holding the shaft at normal position and means for supporting the forward portion of the body and capable of permitting the body to slide and move rearwardly and upwardly.

3. A concave structure for an overshot threshing cylinder comprising a concaved body spaced above the cylinder, a crank shaft journaled above the cylinder pivotally sup porting the rear edge of the body and capable of raising the rear of the body, means supporting the forward portion of the body and capable of permitting the body to slide and move rearwardly and upwardly and a spring pressed dog for holding the shaft and rear portion of the body at normal position.

In testimony whereof I aflix my signature.

FRANK J. HABA. 

